Ore-concentrator



(No Model.) 2 Sheets-Sheet 1.

J. H. 'P-EMBERTON. ORE GONOENTRATOR.

No. 401,457. Patented Apr. 16, 1889.

WA 70510 I femberton 2- Sheets-Sheet 2'.

(No Model.) J. H. PEMBERTON.

ORE GONGENTRATOR.

No. 401,457. Patented Apr. 16, 1889 V 1 I I w th;

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UNITED STATES PATENT EEicE.

JOHN H. PEMBERTON, OF LOS ANGELES, CALIFORNIA.

ORE-CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 401,457, dated April 16, 1889.

Application filed September 5, 1837, Serial No. 248,865. (No model.)

To all whom it may concern/.-

Be it known that I, JOHN H. PEMBERTON, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Improvement in Ore-Concentrators, of which the following is a specification.

My invention relates to an improvement in ore-concentrators; and it consists in the peculiar construction and combination of devices that will be more fully set forth here inafter, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a perspective view of an ore-concentrator embodying my improvements. Fig. 2 is a vertical longitudinal sectional view of the same.

Fig. 3 shows a modified form of my invention. Fig. 4 is a top plan view, portions being broken away.

A represents the parallel sills of the frame, which are connected at their front and rear ends by cross-beams B and near their centers by a beam, 0.

D represents a pair of vertical standards which rise from the sills near the rear ends thereof and have their upper ends connected by a horizontal cross-bar, E. At a suitable distance from their lower ends the said standards are connected by a oross-beam, F.

G represents a pair of vertical standards which rise from the sills at a suitable distance in front of the standards, and are connected by a cross beam, H, and a similar beam, I, connects them at a point below the beam I'l.

' K represents apair of inclined brace-beams, the lower front ends of which are bolted to the front upper sides of the sills, and the rear upper ends of which are bolted to the standards D. The central portions of the inclined braces are bolted to the standards G.

L represents a horizontal beam, which conmeets the central portions of the inclined braces and is arranged above and in'line with the beam 0. An arched beam, M, connects the brace-beams near their rear upper ends, the upper side of the said arched beam being slightly higher than the upper side of beam F. From the rear side of the beam L, at the center thereof, depends a vertical hanger, N.

0 represents avertically-movable standard,

the lower portion of which is squared and passed through square central openings in the beams C and L. The upper portion of the standard 0 is bifurcated to form forked arms P, between which is secured a funnel-shaped hopper, R, having adischarge opening or nozzle, S, in its lower end. A lever, T, is fulcrumed in the lower end of the hanger, an d has its front end inserted in an opening near the lower end of the standard 0, and on the rear projecting arm of this lever is supported a sliding weight, U.

V represents a coiled retract-ile spring, which has its upper end attached to the rear end of the lever and its lower end attached to the beam B.

In the standards D are journaled sheaves W, over which pass ropes or chains X. The inner ends of these ropes or chains are attached to the standard 0, and to their outer ends are attached weights Y, which serve to partly sustain the weight of the hopper and its supporting-standard.

Z represents a vertical shaft, which is journaled in bearingblocks secured to the centers of the beams H and I, and the lower end of which extends downward into the hopper, the said shaft being in vertical alignment with the center of the hopper. The lower portion of the shaft Z has a series of radiating horizontal stirriiigarms, A, that extend outward to within a slight distance of the sides of the hopper. This shaft and its arms constitute an agitator, the purpose of which is to keep the contents of the hopper thoroughly stirred. From the upper end of the shaft Z extends a crank-arm, B.

G represents a vertical shaft, which is journaled in bearing-boxes attached to the crossbeams E and F of the frame. To this shaft is rigidly secured a miter gear-wheel,D', that meshes with a miter-pinion, E, on a horizontal driving-shaft, F, having a pulley for a driving-belt. The upper end of the shaft C has a crank-arm, G, which is shorter than the crank B and is connected to the latter by a pitman, H.

From the foregoing description it will be readily understood that the rotary motion of the drivin shaft will be imparted to the shaft 0', and that the cranks and pitman will The operation of my invention is as fol-- lows: The slums are allowed to flow from the battery into the hopper, and the weight U is placed at such a point upon the balance beam or lever T that when the hopper is filled with slums a certain amount of concentrate will be sufficient to overcome the resistance of the discharge-opening and permit the concentrate to escape. Power being applied to the band-' pulley causes the agitator to turn first-in one directionand then in the contrarydirection in the hopper, as before described, thereby disturbing the slums and preventing them from packing, thus allowing the heavier minerals to sink to the bottom of the hopper,

. while the lighter portions of the slums flow off around the rim thereof.

turbed thereby, but will gradually settle down and pass out as the accumulation goes on, and-prevent the flow of waterthrough the discharge-opening in the bottom of the hopper.

-In Fig. 3 I illustrate a modified form of my invention, in which employ a bar, a, which is attached to the beam F, rests on the archedbeam, and supports the valve at its front end against vertical movement in the dischargeopening of the hopper, the valve being in this instance disconnected from the agitator.

'Othermeans may be employed for securing the valve against vertical movement without of the vertically-movable hopper having the The concentrate in the bottom of the hopper, being below the stirring-arms of the agitator, will not be disdischarge-opening inits lower end, the agitator secured against vertical movement, and the stationary valve attached to the agitator and normally closing the discharge-opening of the hopper, substantially as described.

2. In an ore-concentrator, the combination of the vertically-movable conical hopper having the discharge-opening, the agitator arranged in the hopper and adapted to rotate therein, said agitator being secured against vertical movement, and the conical valve swiveled to the lower end of the agitator and adapted to close the discharge-opening in the hopper in the normal position of the latter, and means for moving the hopper and agitator, substantially as described.

3. In an ore-concentrator, the combination "of the vertical frame-work provided with the guide-bars, a standard playing in said guidebars, a hopper secured to said standard, the

valve stationary against verticalmovement for closing the lower end of the hopper, an agitator connected to said valve, and counterbalancing devices for effecting the vertical movement of the hopper and its standard to open its lower end, substantially as described. 4. In an ore-concentrator, the combination of the vertical frame-Work provided with the guide-bars, a standard playing in said guidebars, a hopper secured to said standard, a stationary valve at the lower end of said hopper, a balance beam or lever, T, pivoted, as described, to elevate said hopper, cords connected to said yoke-frame and passing over sheaves in the main frame, and Weights connected to said cords, substantially as described. 5

5. In an ore-concentrator, the combination of the vertically-movable conical hopper having the discharge-opening, and the conical valve adapted to close the said dischargeopening in the normal posit-ion of the hopper, and the agitator within the hopper, both the valve and the agitator being held againstvertical movement, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

' JOHN H. PEMBERTON.

lrVitnesses:

J OHN" H. BOOK, ALBERT M. THORNTON. 

